At each point on the surface of the cube shown in the figure the electric field is parallel to the z axis. The length of each edge of the = + 19k N/C . cube is 4.1 m. On the top face of the cube the electric field È = − 36k N/C_and on the bottom face it is Determine the net charge contained within the cube.

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Electric Charges and Fields

One of the fundamental properties is the electromagnetic property. Charge cannot be destroyed by any process and this contributes formally to the law of charge conservation.